In F-sharp minor, 3/4 time. As the title suggests, it is a waltz with a sentimental atmosphere. The alternation between the tonic key and the parallel minor of the submediant key creates an otherworldly and floating sensation. From measure 7, the melody gradually ascends, and in the process of reaching its peak and descending, a striking Neapolitan sixth harmony appears, before settling back into the tonic key. I find this progression to be a particularly beautiful point. From measure 26, the same progression is reproduced in E major. From measure 51, it returns to F-sharp minor, but the interjection that was an ascending figure in measures 3 and 4 now appears as a descending figure. The piece concludes beautifully with an arpeggio of the tonic chord. Let's perform this piece with rich emotion, embracing the sway of the waltz and feeling the nuances of the keys and harmonies.